I measured water levels in the bank near area of a small river and I
found in two piezometers located near higher trees a clear diurnal
fluctuation: the water level was lower during the day and highest at
mid-night.
Could it be that the reason is that those trees suck water with their
roots ? Are trees able to transport such large amounts of water and
evaporate ist - the sediment is gravel with a rather high hydraulic
connectivity ?
Could anybody of you give me citations which are related to this topic -
activity of trees, measurement of root-sucking pressure e.g. ?
Thanks a lot in advance for any help
Franz
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Franz H. Wagner, Biological Station Lunz
3293 Lunz am See, AUSTRIA
TEL: ++7486 8095 24 FAX: ++7486 8095 31
e-mail: franz.wagner at oeaw.ac.at